There's a very brief TF in ep 22 of Accel World. It's one of the character's abilities so we might be seeing it more often. There's a bit of process going on with the change from bipedal leopard girl to quadruped so I figured it would be relevant. Granted, their online avatars are more akin to robots so I'm unsure if it really applies.
Here's the clip, I couldn't find the English subs on youtube, so watermarked and spanish subs may have to suffice unless someone finds a better version.
www.youtube.com/watch?v=9zdsO28_jkw#t=5m05s